[ubuntu-studio-users] no HDMI output

bart deruyter bart.deruyter at gmail.com
Tue Jun 4 19:20:24 UTC 2019

Hi all,

I managed to fix it :-D

The issue was secure boot. So when having secure boot on while installing
the proprietary nvidia drivers, the HDMI port on the laptop does not work.

The nvidia drivers even aren't loaded, though they show as 'installed' by
the GUI installer of proprietary drivers.

If anyone has this issue in the future:

purge all nvidia drivers, reboot to BIOS, disable secure boot, reinstall
drivers... et voila, it works :-)

Sidenote: the display manager should be lightdm, I think. I've read
numerous reports gdm3 causes issues with hdmi too, but I use lightdm
anyway, so I didn't test it.

thanks for offering your help Ralf :-)


On Twitter <https://twitter.com/Bart_Issimo>
On Google+ <https://plus.google.com/u/0/b/116379400376517483499/>

Op di 4 jun. 2019 om 20:57 schreef Ralf Mardorf <ralf.mardorf at alice-dsl.net

> On Tue, 4 Jun 2019 15:47:38 +0200, bart deruyter wrote:
> >xrandr says: HDMI-1 disconnected (normal left inverted right x axis y
> >axis)
> You aren't using Wayland?
> There's no output mentioning HDMI2?
> What's the output of
>   xrandr --verbose | grep -i hdmi
> ?
> Did you test different HDMI cables? Are the HDMI sockets clean?
> Do you have anything monitor related
> in /etc/X11/xorg.conf or /etc/X11/xorg.conf.d/?
> For example
> $ head -6 /etc/X11/xorg.conf
> Section "Monitor"
>     Identifier  "HDMI2"
>     DisplaySize  526 296
>     Option      "PreferredMode" "1920x1080"
>     Option      "Primary" "true"
> EndSection
> Did you test the FLOSS driver?
> --
> ubuntu-studio-users mailing list
> ubuntu-studio-users at lists.ubuntu.com
> Modify settings or unsubscribe at:
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-studio-users/attachments/20190604/3903de5e/attachment.html>

More information about the ubuntu-studio-users mailing list